Withdrawal of air and water of condensation from steam condensers



Dec. 4 1923. 1,476,663

W. D. WEIR WITHDRAWAL OF AIR AND WATER OF CONDENSATION FROM STEAM CONDENSERS Filed Dc. 1. 1922 2 Sheets-Sheet 1 v Mal km Ww zfiazysz'r 7 Mai/W2 Dec. 4, 1923. 6 1,476,663 Vl EL VVEIR WITHDRAWAL OF AIR AND WATER OF CONDENSATION FROM STEAM CONDENSERS Filed Dec. 1, 1922 2 Sheets-Sheet 2 Fatented EDec. 4, i923 WILLIAM DOUGLAS Winn, or CATHCART, GLASGOW, soormrnn, assrenoa TO G. a J.

wnrn, LIMITED, or eLAseoW, SCOTLAND.

'W'ITI-IDRAWAL'OF "AI-R AND WATER"OF'GONDE1\TSATION FROM STEAM CONDENSERS.

Application filedDecember 1,.1'5222. .Seria1.1 Io..604;327.

To 0277, 207mm :27; may concern:

Be it known that 1, WILLIAM DOUGLAS VT-17R, a subject or the King of Great Britain and Ireland, residing at Cathcart, Glasgow, Scotlanchhave invented certain new and useful Improvementsiii-the Withdrawal or" Air and lVater or Condensation from Steam Condensers; and 1 do hereby declare the following to be a full, clear, and exact description of the invention, such as wilienable others skilled in the art to which it appertains to make and use the same, reference being had :to theaccompanying drawings,.and to letters or figures of reference marked .thereon, which form a part of this specification,

This invention relat-esto the withdrawal oi. air and water of condensation from steam condensers by the combined action of a steam-jet air-ejector and a reciprocating air pump.

.The invention will be described in the following specification and defined in the annexed claims. The characteristic features of the invention are that the air pump is of the bucket type with admission valves, bucket valves, :and discharge valves, that theiejector withdraws the air from'the condenser and discharges it into the air pump through a port which is situated above the admission valves and below the bucket when the latter is at the top of its stroke, and which is covered by the bucket during a portion of its stroke, and that the air pump withdraws the water of condensation direct from the condenser, this Water entering the pump through the admission valves.

It is to he understood. that the words above; and below are employed for convenience. and clearness of expression. They V are used with the meaning which they have literally when the pump is' vertical with the admission valves at the bot-tom and the discharge valves atthe top. The jet steam (of the ejector), together with vapour withdrawn from the condenser with the air, may be condensed by contact with the water in the air pump barrel; or a supplementary condensermay, for this purpose, be interposed between the ejector and the air pump.

When such a supplementary condenser is employed, a second steam-jet ejector may be provided between this condenser and the air pump, thus providing two stage steam-jet air ejection.

The condensing water tontheysupplementary condenser (when such a condenser is employed) may be taken from .the discharge of the air pump; and the supplementary condenser may be formed structurally in one with the air pump.

The invention is illustrated' in the acthe air pump.

The same reference letters are used to designate similar parts in the several figures.

Referring to Fig. 1,a.i-s the main condenser a-nd 7) is the air pump. The air pump is of the twin-barrel vertical type with discharge at the top. It I is provided with head or discharge valves,- shown, i n the caseotone barrel at .0, withbuc'ket valves shown at d in the bucket w,.and with Ifoot or admission valves shown at e. The water of condensation leaves'the condenser by the pipe which delivers it to the air pump below the foot valves.

The steam-jet air-ejector. g withdraws the air from the main condenserby,thepipe- 71. and delivers it into. the supplementary-condenser it where the steam of the jet, and the vapour drawn from. the-main condenser with theair, are condensed. The air. and water of condensation are discharged from the sup 'ilementary condenser by the pipe and througlnnon-return valves o (better seen in Figs. 2 and into thetwoair-pump barrels,'entering the latter at' qfThe condensing water for the supplementary condenser is taken by the duct m from the. discharge of theair pump. I

The supplementary condenser may. be omitted, and the steam from the ejector condensed in the barrelsof the pump by mingling there with the water ofcondensation.

When a supplementary condenser is employed, a second steam-jet air-ejector may be provided between this condenser and the air pump, thus providing two-stage steam- .Such an arrangement is shown in Fig. 2

where the second-stage ejector is indicated by the reference letter a. The first-stage ejector, supplementary condenser, and other elements or parts are represented. by the same reference letters as in Fig. 1.

l Vhena supplementary condenser is provided and is supplied with condensing water from the discharge of the air pump, it may with advantage be formed structurally in one with the air pump. Such an arrangement isshown in Figs. 3 and at. Fig. 3 is a sectional elevation, and Fig. 4a sectional plan.

The invention may be employed with air pumps ha'ving a single barrel or with two, three, or more barrels, and driven direct by a steam cylinder'or cylinders or in any other suitable manner.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is l. The combination with a steam condenser of a steam-jet air-ejector, a reciprocating air pump of the bucket type with I admission valves, bucket valves, and discharge valves, a port in said pump situated above the said admission valves and so situated that it is below the said bucket when the, latter is at the top of its stroke and is covered by the said bucket during a portion of its stroke, means whereby the air from the said condenser is withdrawn therefrom by'the said ejector, means whereby this air is discharged into the said pump through above the said admission valves andso situated that it isbelow the said bucket when the latter is at the top of its stroke and is [covered by the said bucket during a portion of its stroke,'a supplementary condenser, means whereby the air -from the first men- 'tioned condenser is withdrawn therefrom by the sald e ector, means whereby this air is discharged through the said supplementary condenser and thereafter through the said port into the said air pump, and a pipe connection whereby the said air pump withdraws the water of condensation direct from the first mentioned condenser and delivers it into the said pump through the said admission valves. 1

3. The combination with a steam condenser of a steam-jet air-ejector, a reciprocating air pump of the bucket type with admission valves, bucket valves, and. discharge valves, a port in said pump situated above the said admission valves, and so situated that it is below the said bucket when the latter isat the top of its stroke and is covered by the said bucket during a portion or" its stroke, a supplementary condenser,a second steam-jet air-ejector, means whereby the said, first mentioned ejector withdraws the air from the condenser anddischarges it through the said supplementary condenser, means whereby the said second-mentioned ejector withdraws the air from the" said supplementary condenser and discharges it through the said port into the said air pump, and a pipe connection whereby the said air pump withdraws the water of condensation direct from the first mentioned condenser and delivers it into the said pump through the said admission valves.

4. The combination with a steam condenser of a steanrjet air-ejector, a recipro eating air pump of the bucket type with admission valves, bucket valves, and discharge valves, a port in said pump situated above the said admission valves and so situated that it is below the said bucket when the latter is at the topiof its stroke and is covered by the said bucket during a portion of its stroke, a supplementary conoenser formed structurally in one with the said air pump, the water space in said supplementary condenser being connected'up to the said pump in a manner to allow of water passing from the discharge of the said pump ll1l10- the said supplementary condenser. to

act as condensing water therein, means whereby the air from the first mentioned condenser is withdrawn therefrom by the said ejector, means wheeby this air is dis charged through the said supplementary} connection whereby the said air pump withdraws the water of condensation direct from the first mentioned condenser and delivers it into the said pump through the said admission valves.

cation.

THE RIGHT HGNOURABLE WILLlAlVl DOUGLAS, BARON WEIR OF EASTWOOD P. C. 

